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Let's look at the evidence. Almost 650 appearances for two of Europe's biggest clubs in Ajax and Barcelona.

Virtually reinventing the centre-back role and making the sweeper job his own.

Playing over a century of games for his country before taking his vast playing experience into the dugout and becoming a top manager.

Taking training on an electric scooter.

Yes, now in charge of the Amsterdam giants, De Boer hasn't let an injury stop him from doing his job.

THIS GUY! (Photo: Dean Mouhtaropoulos)

After suffering a ruptured Achilles in a game of footvolley (no, us neither) De Boer zoomed around the Ajax training ground on an electric scooter while barking instructions and running the rule over his players.